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Updated: May 22, 2026

Clinicopathological Analysis of miRNA Expression in Breast Cancer Tissues by Using miRNA In Situ Hybridization
Published on: June 7, 2016
A genetic variant located in miR-423 is associated with reduced breast cancer risk
Robert A Smith1, Dominik J Jedlinski, Plamena N Gabrovska
1Genomics Research Centre, Griffith Health Institute, Griffith University, QLD, Australia.
Background/Aim:
Since microRNAs (miRNAs) act as translational regulators of multiple genes, single nucleotide polymorphisms (SNP) in them can have potentially wide-ranging effects. Using an association approach, this research examined the effects of the rs6505162 SNP, an A > C polymorphism located in the pre-miRNA region of miR-423, on breast cancer development.
Materials And Methods:
Caucasian Australian women with breast cancer and controls matched for age and ethnicity were genotyped for rs6505162 and their genotypic and allelic frequencies analysed for significant differences.
Results:
Analysis indicated that there were significant differences between the case and control populations (χ2 = 6.70, p = 0.035), with the CC genotype conferring reduced risk of breast cancer development (odds ratio = 0.50 95% confidence interval = 0.27-0.92, p = 0.03).
Conclusion:
Further functional research is required to determine the mechanism of action of this SNP on miRNA function.
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